Granular diff versioning for agent editing

Had some ideas about version control:

Attribute, down to individual words: word created manually or with ai. if ai, which sources cited (scoped to paragraphs). also: full agent trace that led to the edit (all tool calls + metadata). also: any multi-agent transactions at the file/paragraph lock. all data stored for every version.

Why do this? Basically, getting as much into a unified version control system as possible, which helps find/fix errors. Just posting to share ideas. If anyone has done anything similar, please mention it!